Self-cleaning material level detection device

Abstract

The utility model relates to the technical field of material level detection, in particular to a self-cleaning material level detection device. The device comprises a material level meter and an air tap arranged on the material level meter, one end of the air nozzle is connected to an air source, and the other end of the air nozzle extends towards a radar lens of the level gauge; the air tap can form an air pressure diaphragm on the outer side of the radar lens. In the working process of the device, the air nozzle can form a layer of air pressure diaphragm on the outer side of the radar lens, the air pressure diaphragm can prevent dust from being blocked on the surface of the radar lens, meanwhile, the surface of the lens can be cleaned, dirt on the surface of the lens can be blown away, and therefore light emitted by the radar lens cannot be blocked by substances such as coal ash, and the service life of the radar lens is prolonged. And the detection precision of the level gage is not reduced, so that the level gage can reliably work for a long time.

Description

Technical Field

[0001] This utility model relates to the field of material level detection technology, and in particular to a self-cleaning material level detection device. Background Technology

[0002] Currently, China's requirements for intelligent manufacturing in the coal industry are becoming increasingly stringent, and various optical sensors are being used in intelligent construction. However, optical sensors face significant limitations in the dusty and sludge-rich environment of the coal industry. A level gauge is a sensor that uses radar light to scan the surface morphology and height of coal within a coal bunker. During operation, the radar lens of the level gauge extends into the coal bunker to detect the material level. Over time, a layer of coal ash accumulates on the surface of the radar lens; when the coal is wet, even sludge may adhere. Excessive amounts of coal ash and sludge can affect the sensor's detection accuracy and even its normal operation. Utility Model Content

[0003] The purpose of this invention is to provide a self-cleaning level detection device to solve the technical problem that dirt easily adheres to the lens surface of the existing level gauge, affecting the detection accuracy and normal use of the level gauge.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A self-cleaning level detection device includes a level gauge and an air nozzle mounted on the level gauge; one end of the air nozzle is connected to an air source, and the other end of the air nozzle extends toward the radar lens of the level gauge; the air nozzle can form a pressure diaphragm on the outside of the radar lens.

[0006] Furthermore, the number of air nozzles is multiple and they are distributed at intervals around the radar lens.

[0007] Furthermore, the level gauge includes a main body and a mounting flange connected together, and the air nozzle is connected to the mounting flange via an air pipe.

[0008] Furthermore, the air tube is L-shaped, with one end fixedly connected to the mounting flange, and the other end bent and extended toward the radar lens and connected to the air nozzle.

[0009] Furthermore, it also includes a light-transmitting partition laid on the outside of the radar lens.

[0010] Furthermore, it also includes a partition fixing flange installed on the level gauge, wherein the light-transmitting partition is clamped between the level gauge and the partition fixing flange.

[0011] Furthermore, the main body includes an antenna module, an electronic module, and a Bluetooth communication module. The mounting flange is disposed between the antenna module and the electronic module, and the Bluetooth communication module is disposed on the electronic module.

[0012] Furthermore, the antenna module includes an antenna housing, the outer contour of the cross-section of the antenna housing is petal-shaped, and it includes a plurality of petals connected in sequence; an air nozzle is disposed between any two adjacent petals.

[0013] Furthermore, the electronic module is provided with a wiring port.

[0014] Furthermore, a solenoid valve is installed on the pipeline between the air nozzle and the air source.

[0015] The beneficial effects of this utility model are:

[0016] The self-cleaning level detection device provided by this utility model includes a level gauge and an air nozzle installed on the level gauge. One end of the air nozzle is connected to an air source, and the other end extends towards the radar lens of the level gauge. The air nozzle can form a pressure diaphragm on the outside of the radar lens. During operation, the air nozzle forms a pressure diaphragm on the outside of the radar lens. This pressure diaphragm prevents dust from adhering to the surface of the radar lens and also cleans the lens surface, blowing away dirt. This ensures that the light emitted by the radar lens is not obstructed by substances such as coal ash, thus ensuring that the detection accuracy of the level gauge does not decrease and enabling the level gauge to work reliably for a long time. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A three-dimensional schematic diagram of the self-cleaning material level detection device provided in the embodiment of this utility model;

[0019] Figure 2 This is a front view diagram of the self-cleaning material level detection device provided in an embodiment of the present utility model;

[0020] Figure 3 This is a bottom view of the self-cleaning material level detection device provided in an embodiment of the present invention.

[0021] icon:

[0022] 1-Level gauge; 11-Mounting flange; 12-Antenna module; 121-Antenna housing; 13-Electronic module; 131-Wiring port; 14-Bluetooth communication module;

[0023] 2-Air valve;

[0024] 3-Trachea;

[0025] 4-Transparent partition;

[0026] 5-Partition fixing flange. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] It should be noted that in the description of this utility model, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] To address the technical problem that the detection accuracy and normal operation of level gauge 1 are affected by the inability to promptly clean dirt adhering to the lens surface, this utility model embodiment provides a self-cleaning level detection device, referring to... Figures 1 to 3 The device includes a level gauge 1 and an air nozzle 2 installed on the level gauge 1; one end of the air nozzle 2 is connected to an air source, and the other end of the air nozzle 2 extends toward the radar lens of the level gauge 1; the air nozzle 2 can form a pressure diaphragm on the outside of the radar lens.

[0031] During operation, the air nozzle 2 can form a pressure diaphragm on the outside of the radar lens. This pressure diaphragm can prevent dust from blocking the surface of the radar lens and can also clean the lens surface by blowing away the dirt. This ensures that the light emitted by the radar lens is not blocked by coal ash or other substances, thus ensuring that the detection accuracy of the level gauge 1 does not decrease and that the level gauge 1 can work reliably for a long time.

[0032] Based on the above structure, a solenoid valve is installed on the pipeline between the air nozzle 2 and the air source, so that the air nozzle 2 can be controlled by the PLC to switch between periodic blowing, long-term blowing, and manual blowing modes.

[0033] The material level detection device provided in this application solves the problem that the radar lens of the material level gauge 1 cannot be cleaned in time, resulting in low detection accuracy or even failure to function properly. It avoids false alarms when the silo is full or the silo cannot be filled. At the same time, the material level gauge 1 does not need to be removed during cleaning, which reduces the workload and the failure rate caused by frequent disassembly and assembly.

[0034] Continue to refer to Figure 1 The number of air nozzles 2 is multiple and they are distributed at intervals around the radar lens, so that the air pressure diaphragm can be evenly laid on the outside of the radar lens to achieve better blocking and cleaning effects.

[0035] For example, the number of air nozzles 2 is four and they are evenly distributed around the radar lens, thereby forming a uniform air pressure diaphragm on the outside of the radar lens.

[0036] Furthermore, the level gauge 1 includes a connected main body and a mounting flange 11, with the air nozzle 2 connected to the mounting flange 11 via an air pipe 3. Specifically, the air pipe 3 is a rigid pipe and is L-shaped; one end of the air pipe 3 is fixedly connected to the mounting flange 11, and the other end bends and extends towards the radar lens and connects to the air nozzle 2. The connection between the air pipe 3 and the mounting flange 11 can be either screwed or welded, and the connection between the air pipe 3 and the air nozzle 2 is screwed, with the air nozzle 2 fixedly mounted on the level gauge 1 via the air pipe 3.

[0037] When the material level detection device needs to be installed, simply fix the mounting flange 11 in the set position and connect the air pipe 3 to the air source. The air pipe 3 can maintain the relative position of the material level gauge 1 and the air nozzle 2. No user adjustment is required, and the whole installation process is simple and quick.

[0038] Continue to refer to Figure 1The device also includes a light-transmitting partition 4 laid on the outside of the radar lens. The light-transmitting partition 4 protects the radar lens within the housing of the level gauge 1, isolating the radar lens from the outside and preventing dust from entering the housing of the level gauge 1. The air nozzle 2 can spray high-pressure gas onto the light-transmitting partition 4, thereby forming a pressure diaphragm on the surface of the partition 4, preventing dust from adhering to it. The air nozzle 2 and the light-transmitting partition 4 form two protective layers on the outside of the radar lens, ensuring that the light emitted by the radar lens is not obstructed by coal ash or other substances, thus maintaining the detection accuracy of the level gauge 1.

[0039] Based on the above structure, the material level detection device further includes a partition fixing flange 5 mounted on the material level gauge 1, and a light-transmitting partition 4 clamped between the material level gauge 1 and the partition fixing flange 5. The partition fixing flange 5 and the housing of the material level gauge 1 are fixedly connected by screws, and the periphery of the light-transmitting partition 4 is clamped between the material level gauge 1 and the partition fixing flange 5, thereby achieving the fixed installation of the light-transmitting partition 4.

[0040] Based on the above structure, a thin film is attached to the outer surface of the light-transmitting partition 4. Operators can clean the light-transmitting partition 4 by periodically replacing the film, which not only facilitates cleaning of the light-transmitting partition 4 but also extends its service life.

[0041] Reference Figure 2 The main body includes an antenna module 12, an electronic module 13, and a Bluetooth communication module 14. A mounting flange 11 is positioned between the antenna module 12 and the electronic module 13, and the Bluetooth communication module 14 is mounted on the electronic module 13. The electronic module 13 has a wiring port 131. In this structure, the antenna module 12 wirelessly transmits and receives pulse signals to and from the material, the electronic module 13 processes and identifies the pulse signals received by the antenna module 12 to determine the material's height, and the Bluetooth communication module 14 enables remote control of the level gauge 1, improving convenience.

[0042] After the material level detection device is installed, the mounting flange 11 is fixed to the top of the material silo. The antenna module 12, the air nozzle 2, and the air pipe 3 extend into the material silo. The electronic module 13 and the Bluetooth communication module 14 are located outside the material silo to facilitate the operator to make circuit connections to the material level gauge 1. The end of the air pipe 3 away from the air nozzle 2 passes through the mounting flange 11 to facilitate the operator to install the pipeline between the air pipe 3 and the air source.

[0043] Reference Figure 3 The antenna module 12 includes an antenna housing 121. The outer contour of the cross-section of the antenna housing 121 is petal-shaped, and it includes several petals connected in sequence. An air nozzle 2 is provided between any two adjacent petals.

[0044] In the above structure, the shape of the partition fixing flange 5 is adapted to the shape of the antenna housing 121, and it also includes several lobes connected end to end; the air nozzle 2 overlaps on the partition fixing flange 5. On the one hand, the above structure allows the air nozzle 2 and the air pipe 3 to make full use of the empty area on the level gauge 1 without reserving installation space for the air nozzle 2 and the air pipe 3; on the other hand, the antenna housing 121 can provide a certain degree of support for the air nozzle 2, preventing the air nozzle 2 from shaking, and allowing the air nozzle 2 to spray high-pressure gas towards the radar lens for a long time, reducing the failure rate of the device.

[0045] Based on the above structure, the nozzle 2 has an annular protrusion around its periphery, which is held between two adjacent valves. In this structure, the two adjacent valves can limit the movement of the nozzle 2 between them, further preventing the nozzle 2 and the air tube 3 from shaking and improving the overall stability of the device.

[0046] In this embodiment, the mounting flange 11 is fixed to the top of the antenna housing 121, and the light-transmitting partition 4 is fixed to the bottom of the antenna housing 121 via the partition fixing flange 5. The radar lens is disposed inside the antenna housing 121. Under the double protection of the pressure diaphragm formed by the air nozzle 2 and the light-transmitting partition 4, the light emitted by the radar lens will not be obstructed by substances such as coal ash. The air nozzle 2 is not easily shaken by being held between two adjacent lobes, enabling the air nozzle 2 to reliably spray high-pressure gas towards the radar lens for a long period of time.

[0047] In this embodiment, the level gauge 1 is a 3D level gauge, and a probe is respectively installed in each lobe of the antenna housing 121. The above structure increases the detection range of the level gauge 1, and can scan the accumulation shape and height of coal in the entire coal bunker during operation.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-cleaning material level detection device, characterized in that, It includes a level gauge (1) and an air nozzle (2) installed on the level gauge (1); one end of the air nozzle (2) is connected to an air source, and the other end of the air nozzle (2) extends toward the radar lens of the level gauge (1); the air nozzle (2) can form a pressure diaphragm on the outside of the radar lens.

2. The self-cleaning material level detection device according to claim 1, characterized in that, The number of air nozzles (2) is multiple and they are distributed at intervals around the radar lens.

3. The self-cleaning material level detection device according to claim 1, characterized in that, The level gauge (1) includes a main body and a mounting flange (11) connected together, and the air nozzle (2) is connected to the mounting flange (11) through an air pipe (3).

4. The self-cleaning material level detection device according to claim 3, characterized in that, The air tube (3) is L-shaped. One end of the air tube (3) is fixedly connected to the mounting flange (11), and the other end is bent and extended toward the radar lens and connected to the air nozzle (2).

5. The self-cleaning material level detection device according to claim 1, characterized in that, It also includes a light-transmitting partition (4) laid on the outside of the radar lens.

6. The self-cleaning material level detection device according to claim 5, characterized in that, It also includes a partition fixing flange (5) installed on the level gauge (1), and the light-transmitting partition (4) is sandwiched between the level gauge (1) and the partition fixing flange (5).

7. The self-cleaning material level detection device according to claim 3, characterized in that, The main body includes an antenna module (12), an electronic module (13) and a Bluetooth communication module (14). The mounting flange (11) is disposed between the antenna module (12) and the electronic module (13), and the Bluetooth communication module (14) is disposed on the electronic module (13).

8. The self-cleaning material level detection device according to claim 7, characterized in that, The antenna module (12) includes an antenna housing (121), the outer contour of the cross-section of the antenna housing (121) is petal-shaped, and it includes a number of petals connected in sequence; an air nozzle (2) is provided between any two adjacent petals.

9. The self-cleaning material level detection device according to claim 7, characterized in that, The electronic module (13) is provided with a wiring port (131).

10. The self-cleaning material level detection device according to any one of claims 1 to 9, characterized in that, A solenoid valve is installed on the pipeline between the air nozzle (2) and the air source.

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